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1.
The act of threatening someone, as to place them in a garbage can in "ruse" to actually create reason to physically contact them with out fault.

Is commonly used from male to female as to generate reason to "feel up" the girl with out social akwardness.
"I'm so Garbage Canning YOU"
Proceeds to put hands on the girl and pull her agaisnt him while mocking the act of putting her in a garbage can
by Jimmy Buddy February 11, 2012
 
2.
-Verb.
-To pop out of a random garbage can and back up a person in an argument.
-To interrupt an argument to back up a person
-similar to blackup
-Callum: Yohance has no penis
-isaac randomly appearing: Yohance is the best and he's better than everyone!
-callum: STOP garbage canning!!!!
by callum satank December 13, 2009